Income Taxes (Tables)

12 Months Ended

Dec. 31, 2015

Income Tax Disclosure [Abstract]

Schedule of Provision for Income Taxes

For the years ended December 31, 2015, 2014 and 2013, the provision for income taxes is comprised of the following:

	2015			2014			2013
Current income tax (benefit) provision
Federal	$	(78	)	$	(70	)	$	(113	)
State		494			937			1,086
Foreign		36			5			13
Total current income tax provision		452			872			986
Deferred income tax provision (benefit):
Federal		25,210			30,414			28,628
State		(1,964	)		(2,414	)		(3,900	)
Total deferred income tax provision		23,246			28,000			24,728
Total income tax provision	$	23,698		$	28,872		$	25,714

Components of Deferred Income Tax Assets and Liabilities

The components of deferred income tax assets and liabilities as of December 31, 2015 and 2014 are as follows:

	2015			2014
Deferred income tax assets:
Acquisition and debt related costs	$	18,281		$	20,319
Net operating loss		283,947			269,002
Self-insurance		10,039			9,666
Deferred revenue		942			1,021
Cash flow hedge		6,401			286
Tax credits		4,546			2,920
Other		9,652			7,483
Total deferred income tax assets		333,808			310,697
Valuation allowance		(1,466	)		(1,507	)
Net deferred tax assets		332,342			309,190
Deferred income tax liabilities:
Property and equipment		(309,054	)		(278,851	)
Goodwill		(42,458	)		(35,396	)
Amortization		(17,564	)		(15,226	)
Other		(4,961	)		(4,209	)
Total deferred income tax liabilities		(374,037	)		(333,682	)
Net deferred income tax liabilities	$	(41,695	)	$	(24,492	)

Schedule of Reconciliation between U.S. Federal Statutory Income Tax Rate and Company's Effective Income Tax Provision (Benefit) Rate

The reconciliation between the U.S. federal statutory income tax rate and the Company’s effective income tax provision rate for the years ended December 31, 2015, 2014 and 2013, is as follows:

	2015				2014				2013
Income tax rate at federal statutory rates		35.00		%		35.00		%		35.00		%
State taxes, net of federal benefit		0.56				1.32				(0.77	)
State net operating loss revaluation		(2.51	)			(3.78	)			—
Charitable contribution carryforward valuation allowance		2.01				1.91				—
Tax credits		(1.73	)			(0.80	)			(1.16	)
Other		(0.79	)			2.99				0.05
Income tax rate		32.54		%		36.64		%		33.12		%